Smart-home hazard detector with adaptive heads up pre-alarm criteria

Patent metadata

Field	Value
Publication number	US-9626858-B2
Application number	US-201414508555-A
Country	US
Kind code	B2
Filing date	Oct 7, 2014
Priority date	Oct 7, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A particular smart hazard detector may itself function as a guide during a process of installation of the same at an installation location. Additionally, the installation location of the particular smart hazard detector may play a central role in how various settings of the smart hazard detector are defined and adjusted over time.

First claim

What is claimed is:

1. A method for operating a hazard detector, comprising:
sensing, using a hazard sensor of the hazard detector, a hazard level;
alarming, by the hazard detector, according to an emergency alarm threshold that indicates the presence of a dangerous condition when the emergency alarm threshold is exceeded by the sensed hazard level;
outputting, by the hazard detector, a warning according to a pre-alarm threshold when the pre-alarm threshold is exceeded by the sensed hazard level but the emergency alarm threshold is not exceeded by the sensed hazard level;
storing data indicative of sensed hazard levels over a particular time period, wherein the sensed hazard levels are sufficient to exceed the pre-alarm threshold but insufficient to exceed the emergency alarm threshold;
analyzing the data of the sensed hazard levels over the particular time period to identify a reoccurring trend, wherein:
the reoccurring trend causes the pre-alarm threshold to be exceeded by the sensed hazard level but the emergency alarm threshold to not be exceeded by the sensed hazard level;

raising, by the hazard detector, the pre-alarm threshold to a raised pre-alarm threshold, but not raising the emergency alarm threshold, in response to an onset of a subsequent occurrence of the reoccurring trend;
operating the hazard detector according to the emergency alarm threshold and the raised pre-alarm threshold in response to the reoccurring trend; and
operating the hazard detector according to the emergency alarm threshold and the pre-alarm threshold in an absence of the onset of an occurrence of the reoccurring trend.

2. The method of claim 1 , further comprising:
analyzing data of a second sensed hazard level received from a second hazard sensor;
wherein analyzing the data of the sensed hazard levels over the particular time period further comprises analyzing data of the second sensed hazard level from the second hazard sensor to identify the reoccurring trend.

3. The method of claim 2 , wherein the second hazard sensor detects a different type of hazard than the hazard sensor.

4. The method of claim 2 , wherein the second hazard sensor is located on a second hazard detector located at a different location than the hazard detector.

5. The method of claim 1 , further comprising:
correlating occurrence of the reoccurring trend with a particular status of a home automation device of a home automation system installed at a residence at which the hazard detector is installed; and
wherein raising the pre-alarm threshold to the raised pre-alarm threshold, but not raising the emergency alarm threshold, is performed in response to the onset of the subsequent occurrence of the reoccurring trend and an occurrence of the particular status of the home automation device.

6. The method of claim 1 , further comprising:
correlating occurrence of the reoccurring trend with a particular time period of day; and
wherein raising the pre-alarm threshold to the raised pre-alarm threshold, but not raising the emergency alarm threshold, is performed in response to the onset of the subsequent instance of the reoccurring trend and an instant time of day corresponding with the particular time period of day.

7. The method of claim 1 , further comprising:
correlating occurrence of the reoccurring trend with a particular time period of year; and
wherein raising the pre-alarm threshold to the raised pre-alarm threshold, but not raising the emergency alarm threshold, is performed in response to the onset of the subsequent instance of the reoccurring trend and an instant time of year corresponding with the particular time period of year.

8. The method of claim 1 , further comprising:
receiving input that specifies that the hazard detector is located in a particular location within a residence; and
setting, by the hazard detector, the pre-alarm threshold based upon the input that specifies that the hazard detector is located in the particular location within the residence.

9. The method of claim 1 , wherein the particular time period is selected from a particular day time period, a particular week time period, a particular month time period, and a particular year time period.

10. The method of claim 1 , wherein the data of the sensed hazard levels over the particular time period is stored to a database remote from the hazard detector.

11. The method of claim 1 , wherein the data of the sensed hazard levels over the particular time period is stored to a database in a non-transitory memory of the hazard detector.

12. A hazard detector, comprising:
at least one hazard sensor that senses a hazard level; and
a processing system, in operative communication with the least one hazard sensor, configured to:
output a warning according to a pre-alarm threshold when the pre-alarm threshold is exceeded by the sensed hazard level but the emergency alarm threshold is not exceeded by the sensed hazard level;
cause data indicative of the sensed hazard level to be stored, the data indicating sensed hazard levels over the particular time period that are sufficient to exceed the pre-alarm threshold but insufficient to exceed the emergency alarm threshold;
analyze the data of the sensed hazard levels over the particular time period to identify a reoccurring trend, wherein:
the reoccurring trend causes the pre-alarm threshold to be exceeded by the sensed hazard level but the emergency alarm threshold to not be exceeded by the sensed hazard level;

raise the pre-alarm threshold to a raised pre-alarm threshold, but not raising the emergency alarm threshold, in response to an onset of a subsequent occurrence of the reoccurring trend;
operate according to the raised pre-alarm threshold in response to the onset of the subsequent occurrence of the reoccurring trend; and
operate the hazard detector according to the pre-alarm threshold in an absence of the reoccurring trend.

13. The hazard detector of claim 12 , wherein the processing system is further configured to:
analyze data of a second sensed hazard level received from a second hazard sensor;
wherein analyzing the data of the sensed hazard levels over the particular time period further comprises analyzing data of the second sensed hazard level received from the second hazard sensor to identify the reoccurring trend.

14. The hazard detector of claim 13 , wherein the hazard detector comprises the second hazard sensor which detects a different type of hazard than the hazard sensor.

15. The hazard detector of claim 12 , further comprising a wireless communication interface and wherein processing system is further configured to:
correlate occurrence of the reoccurring trend with a particular status of a home automation device of a home automation system installed at a residence at which the hazard detector is installed, wherein the wireless communication interface is used to communicate with the home automation system,
wherein raising the pre-alarm threshold to the raised pre-alarm threshold, but not raising the emergency alarm threshold, is performed in response to the onset of the subsequent occurrence of the reoccurring trend and an occurrence of the particular status of the home automation device.

16. The hazard detector of claim 12 , wherein processing system is further configured to:
correlate occurrence of the reoccurring trend with a particular time period of day,
wherein raising the pre-alarm threshold to the raised pre-alarm threshold, but not raising the emergency alarm threshold, is performed in response to the onset of the subsequent instance of the reoccurring tren

Assignees

• Google Inc

Inventors

• Sloo David
• Webb Nick
• Matsuoka Yoky
• Fadell Anthony Michael
• Rogers Matthew Lee

Classifications

• H05B47/19

  via wireless transmission · CPC title

• H05B47/11

  by determining the brightness or colour temperature of ambient light · CPC title

• H05B45/20

  Controlling the colour of the light · CPC title

• F24F11/89

  Arrangement or mounting of control or safety devices · CPC title

• G08B25/012

  using recorded signals, e.g. speech (G08B25/08 takes precedence) · CPC title